Electric warp-stop and filling-changing mechanism for looms.



No. 666,729. Patnted Jan. 29. mm. H. WYMAN.

(Application filed Mar. 5, 1900.) (No Model.)

2 Sheets-Sheet l.

No. 666,729. Pat ented Jan. '29, mm. H. WYMAN.

ELECTRIC WARP STOP AND FILLING CHANGING MECHANISM FOR LOUMS.

(Application filed Mar. 5, 1900. (No Model.) 2 Sheets-Sheet 2.

Tm: mums mans 00., mam-Inna, wuulumon. w. r.

Fries.

HORACE IVYMAN, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE CROMPTON &KNOWLES LOOM WORKS, OF SAME PLACE.

ELECTRIC WARP-STOP AND FILLING-CHANGING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 666,729, dated January29, 1901.

Application filed March 5,1900. Serial No. 7,348. (N0 model- To all)whom it may concern.-

Be it known that I, HORACE IVYMAN, of Worcester, county of Worcester,State of Massachusetts, have invented an Improvement in ElectricWarp-Stop and Filling- Changing Mechanisms for Looms, of which thefollowingdescription, in connection with the accompanying drawings, is aspecification, like characters on the drawings representing like parts.

The invention to be hereinafter described relates to that class of loomsin which are provided warp-stop and filling-changing mechanisms of anyusual or preferred construction, the object being to effect the stoppingof the loom in case of a defective condition of the warp and to changethe filling when that in the active shuttle becomes exhausted to apredetermined amount, the operation of the warp-stop andfilling-changing mechanisms being preferably under control of electricdevices, the electric condition of which is changed whenever awarp-thread breaksor becomes unduly slack or whenever the fillingbecomes nearly exhausted in an activ shuttle.

In the form in which it has been herein chosen to illustrate theinvention the arrival of a warp-controlled device, herein termed adetector, into an abnormal position occasioned by the breaking orslacking of a warpthread or the exhaustion of the filling in an activeshuttle to a predetermined amount causes a magnet to become energized,which in turn puts into operative position suitable intermediate deviceswhich may be engaged, as hereinafter disclosed, by a moving actuator,the time of such engagement with reference to the movement of theactuator determining whether the stopping or filling-changing mechanismshall be operated.

In the present form of my invention I have connected the warp and thefilling-detectors in the same electric circuit with an electromagnet,whose armature is connected to the movable engaging devices ofthestopping and filling-changing mechanisms, which on the completion of thecircuit by the abnormalcondition of a warp-thread'or the practicalexhaustion of the filling in the shuttle are brought into the path ofmovement of the actuator,

which will engage one or the other of said devices, according to thedirection of movementof the actuatorat that time. Should thewarp-detectors indicate an abnormal condition of a warp-thread duringthat movement of the actuator calculated to operate the filling-changingmechanism, it is evident that such filling-changing mechanism would bemade operative to supply fresh filling when no indication had been giventhat such change was desirable, to obviate which I have provided meanswhereby that part of the circuit including the warp-detectors isinterrupted or cut out during such movement of the ac tuator, all aswill hereinafter more fully appear.

In the drawings and following description I have disclosed my inventionas preferably applied to a shuttle-changing loom of the character setout in United States Letters Patent No. 614,369, dated November 15,1898; butitis to be understood that my invention is equally applicableto any other type of loom having a filling-changing mechanismsuch, forin stance, wherein the filling or filling-carrying bobbin is changed inthe shuttle when the filling is practically exhausted-and I desire it tobe understood'in the following description and claims when reference ismade to a filling-chauging mechanism that I mean to include thereby anyform of such mechanism which serves to supply the loom with either afresh shuttle or the same shuttle with a fresh or filled bobbin orcarrier.

In the drawings, Figure l is an end view of a loom, showing theshuttle-changing mechanism and corresponding to Fig. 2 in Patent No.614,369, above referred to, with some of the parts omitted. Fig. 2 is asectional elevation through the loom,showing my improvements appliedthereto. Fig. 3 is a sectional detail through the breast-beam, showingthe stopping mechanism or means for knocking off the shipper. Fig. 4 isa like section showing the means for operating the filling-changingmechanism, and Fig. 5 is a detail view of a portion of one form ofshuttle that may be.

used, showing the electric contacts or detectors carried thereby. v

The loom-frame A, crank-shaft B, pitman B, the under or cam shaft 13*,the gears B and E the mutilated gears G, shaft a link 6 lever 6 link (2stud b shuttle-box rod 1), mutilated gear f, shaft 39, arm link 0 joinedto the elbow-leverf, pivoted at 20 on a stand B the elbow-lever emounted on stud e and having stud or roll 26, the shuttle-feeder h,mounted on lever or bar h pivoted on a stud h arm h spring h, inclinedguides h and c and roller W are and may be all as fully set forth inLetters Patent No. 614,369 and need not be further described.

Preferably attached to the frame of the loom subjacent to thebreast-beam 11 is an electromagnet 12, having an armature 15, normallyheld away from the magnet 12 by the spring 5 and which controls theoperation of the warp-stop and filling-changing mechanisms through themovable eugagiugdevices,as will be hereinafter more fully described. Theelectromagnet 12 has connected thereto the wires 13 and 14 of anelectric circuit, the electric energy whereof is derived from anysuitable sourceas, for instance, a series of jars 9, which constitutes abattery. It is to be understood, of course, that such electric energymay be taken from a dynamo or any convenient electrically-chargedconductor. In the electric circuit thus formed is interposed the devicesfor detecting any abnormal condition of the warp-threads and the meansfor detecting a practical exhaustion of the filling in the activeshuttle in a manner that should a warp-thread break or become undulyslack or should the filling become nearly exhausted the circuit will beclosed, thereby energizing the magnet 12, which in turn will attract andmove the armature 15, and through the movable or intermediate devices,to be described, will cause either the warp-stopping mechanism to beactuated to stop the loom or the filling-changing mechanism to be set inaction to supply fresh filling, according as to whether the indicationhas been caused by defects in the warp or filling. I

In the rear of the lay I provide any suitable form of devices to detectan abnormal condition in the warp-threads or any of them, and in thepresent instance such devices preferably consist of two series ofdetectors or drop devices 1, Fig. 2, extending vertically between twosets of bars 2, supported at their ends on stands 3, secured to theloom-frame. Each drop-Wire has a hole 1' therein, through which awarp-thread 4 passes, and an elongated slot 1", through which a guidingand supporting bar 5 extends, said warp-threads resting on the upper setof bars 2. The bars 5 are secured at their ends to the stands 3, andeach bar 5 is made in two parts, each of electrical conducting material.The part 5 of the bar in this instance extends into a longitudinal slotin the upper part of the bar 5 and is insulated therefrom. Abinding-post '7 is connected with the two parts 5, and a secondbinding-post 7 is connected with the stand 3, and a wire 8 leads fromthe post 7 to one pole of a battery made up of jars 9 or other suitablesource of electric energy, and a wire 10 leads from the post 7 to theother pole of the battery, (see Fig. 2,) the said wire being alsoconnected to the wires 13 and 14 at 13' and 14, leading to theelectroinagnet 12.

In its normal position each drop device or detector 1 is suspended onits warp-thread 4 and held out of contact with the part 5' of the bar 5;but upon the breaking or undue slacking of a warp-thread its detectorwill fall and rest upon the part 5' of the bar 5 and establish anelectrical connection through the detector or drop device and part 5 and5, stand 3, and binding-post '7 to complete the circuit through wires 810 and the electromagnet.

In the form of electric filling-detector mechanism shown in the drawingsthe shuttle is provided with a detector or feeler bearing upon thefilling, preferably near or at the base 'of the bobbin, and adapted uponthe withdrawal of the filling to a predetermined point, usually to thatof leaving only a few picks prior to complete exhaustion, to make anelectric connection and close a circuit by contact with insulated platesattached to the shuttle-box and connected by wires-in this instance tothe circuit including the warpdetectors above described.

As shown by the drawings, the shuttle-body 27 is or may be provided withspring-detectors 2S, normally tending toward each other and bearing uponthe filling on the bobbin or carrier in a manner such that on theexhaustion'ot the filling to an amount sufficient to expose a conductoror metallic ring 29 on the bobbin or carrier electrical connection willbe established between the detectors. Contact-plates 30 are inelectrical connection with the detectors, so that as the shuttle entersthe detecting-box they will be engaged by the contacts 31 31 carried onsaid box, as will be evident. From the contacts 31 31 wires 32 and 33lead to and connect with the wires 13 and 14, respectively, as shown inFig. 2, from which it will be apparent that shouldthe filling in anactive shuttle become practically exhausted a circuit will be completedthrough the filling-detectors 28 28, conductor 29, contacts 30 and 31,Wires 32 33, wires 13 and 14, and electromagnet 12.

Subjacent the breast-beam 11 are parts of the stopping and thefilling-changing mechanisms, the former of which comprises a lever 40,pivoted at 41 and having a toe 43, which when the arm is turned in adownward direction contacts with and moves an arm 42, bearing upon theshipper-handle 44, to thereby disengage said shipper handle from itsusual retaining-notch and stop the loom. On the free end of the lever 40is the movable engaging device, preferably comprising a pawl 45, pivotedto the lever 40 at 46 and having its lower end 47 extending beyond itspivot, joined to the armature 15 by a link or connection 48, from whichit will be evident that motion given to the armature will be imparted tothe movable engaging de- IIO vice to move its free end. To the shaft 39of the filling-changing mechanism and from which said mechanism isoperated is secured the arm 49, carrying at its free end a movableengaging device, preferably in the form of a pawl 50, pivoted at 51 andhaving its upper end 52 extending beyond the pivot 51, connected to thearmature 15 by the link or connection 53, whereby motion imparted to thearmature will move the lower free end of the movable engaging device, aswill be evident. From the construction thus described it will beapparent that a downward impulse given to the movable engaging device 45will cause the arm 40, through the toe 43, to disengage the shipper andcause the loom to stop, while an upward impulse given to the movableengaging device will, through the arm 49, shaft 39, and connections,cause the fillingchanging mechanism to be actuated to supply freshfilling, and these impulses and movements are imparted to the saidmovable engaging devices by mechanism that will now be described.

Pivoted to the loonvframe at is an actuating-lever 61, carrying at oneend a roll or pin 62, which engages and travels in the groove ()4 of acam 63, secured to the cam-shaft B while to its opposite end is pivotally or otherwise connected the actuator 65, which passes through andis guided in its reciprocations by a bracket-arm (56, secured to theloomframe; At its upper end the actuator is provided with a book 66,which on the downward movement of the actuator is adapted to engage themovable pawl 45, carried by the stopping-arm 40, provided the upper endof said pawl has been projected into the path of movement of theactuator by movement of the armature 15 on its pivot 15 toward themagnet to thereby stop the loom. Some distance below the hooked end theactuator is provided with a projecting lug 67, adapted on the upwardmovement of the actuator to engage the lower end of the pawl 50,provided it has been moved into the path of the lug by the armature, andthereby raise the fillingchanging arm 49 to effect a change of filling.The character of the cam 63 and its timing with respect to thecrank-shaft is such that the actuator (55 will be caused to rise duringthe time the shuttle is in the indicating-box, the crank-shaft makingtwo revolutions to one of the cam and its shaft, and as in the presentinstance the filling-changing mechanism is on the side of the layopposite the indicating-box the actuator will have moved thefilling-changing arm upward sufiiciently to cause the filling-changingmechanism to operate on the arrival of the shuttle-at the changing endof the lay, provided the filling has become practically exhausted. It isevident, however, that the warp-detectors might indicate a defectivecondition of the warps during such upward movement of the actuator, inwhich event since both the movable engaging devices or pawls 45 and 50are connected to the same armature they would both be thrown intooperative position by the m ovement of said armature toward the magneton the completion ol the circuit, and if at this time the actuator 65was rising its projection 67 would engage the movable engaging device orpawl 50; pivoted to the filling-changing arm 49, and cause a change offilling. To obviate this, I have provided a switch or makeand-break inthe circuit of the warp-detectors, whereby on the upward movement of theactuator the circuit through the warp-detectors is interrupted, so thatshould a defective condition of the warps or any of them occur at thistime no circuit would be established until upon the downward movement ofthe ac tuator. This switch or make-and-break consists of an arm orbell-crank pivoted to the loom upon properly-insulated journals at Z)between the terminals on m in one of the circuit-wires 10,including thewarp-detectors. One arm 6 of said switch is connected to and properlyinsulated from the actuating-lever 61 to be operated thereby, while itsother end 6 is in proximity tothe terminal m, the other terminal beingconnected to the switch, as usual in such structures. From this it willbe apparent that an upward movement of the actuator 65 through the lever61 will cause the switch to break the wire circuit through thewarpdetectors, for which reason should a warp-thread break or becomeslack no current would be established until on the downward movement ofthe actuator the switch is moved to connect the terminals m m.

It is to be understood, of course, that I do not regard my invention aslimited to the details of structure set forth, which merely indicatesone form of its embodiment, nor to the particular character of switch orthe means for operating it.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In a loom the following instru mentalities, viz: a series ofwarp-detectors, a filling-detector, a stopping mechanism, afilling-chauging mechanism, means under the control of said warp andfilling detectors for operating said mechanisms, and provisions forfreeing said means from the control of one of said detectors atpredetermined times.

2, In a loom the following instrumentalities, viz: a series ofwarp-detectors, a filling-detector, a stopping mechanism, afilling-changing mechanism, means electrically controlled from said warpand filling detectors for operating said mechanism, and provision forfreeing said means-from the control of one of said detectors atpredetermined times.

3. In a loom the following iiistrumentalities, viz: a series ofwarp-detectors, a filling-detector, a stepping mechanism, afilling-changing mechanism, an electric circuit including anelectromagnet and said warp and filling detectors, means under controlof said circuit for operating said mechanisms, and a make- IIO and-breakin said circuit for freeing said means from the control of one of saiddetectors at predetermined times.

4. In a loom the followinginstrumentalities, viz: separate Warp andfilling detectors, a stopping mechanism, a filling-changing mechanism,an electric circuit including an electromagnet and said Warp and fillingdetectors, means under control of said circuit for operating saidmechanisms, a make-and-break in the circuit of the Warp-detectors andoperated from'a moving part of the loom to free said means from controlof the warp-detectors at predetermined times.

5. In aloom the followinginstrumentalities, viz: separate Warp andfilling detectors, a stopping mechanism, a filling-changing mechanism,an electric circuit including an elec tromagnet and said Warp andfilling detectors, an actuator, movable engaging devices connectedrespectively to said stopping and filling-changing mechanisms andadapted to be moved into the path of said actuator on the completion ofthe circuit, and a make-andbreak in the circuit for interrupting thecircuit at predetermined times.

6. In a loom the following instrumentalities, viz: separate Warp andfilling detectors, a stepping mechanism, a filling-changing mechanism,an electric circuit including a single electromagnet and the warp andfilling detectors, an actuator, movable engaging devices connectedrespectively to said stopping and filling-changing mechanisms andadapted to he moved into the path of the actuator on completion of thecircuit, and a make-andhreak in the circuit operated by a movable partof the loom for interrupting the Warpdetecting circuit at predeterminedtimes.

7. In a loom the followinginstrumentalities, viz: separate Warp andfilling detectors, a stopping and a filling-changing mechanism, anelectric circuit including an eiectromagnet, and the War p and fillingdetectors,an actuator, movable engaging devices connected respectivelyto said stopping and filling-changing mechanisms and to the armature of"the electrom agnet adapted to be thus moved into the path of theactuator on completion of the circuit, and a makeand-break in thecircuit of the warp-detectors for interrupting the circuit through thewarp-detectors at predetermined times.

In testimony whereof I have signed my name to this specification in thepresence of tWo subscribing witnesses.

HORACE WYMAN.

Witnesses:

JUSTIN A. WARE, SAMUEL B. SOHOFIELD.

